Description:TECHNICAL FIELD
[001] The embodiments herein generally relate to engine emission control systems and more particularly, to systems and methods for mounting the engine emission control devices such as an exhaust after-treatment device and a positive crankcase ventilation device in a vehicle. Further, embodiments herein relate to a method for positive crankcase ventilation for an engine.

BACKGROUND
[002] During the operation of an engine, certain pollutants are emitted out in the exhaust gases. Due to the harmful nature of these pollutants, the regulatory bodies have emission norms, which all the engines have to be complying thereto. The current emission standard norms for vehicles require vehicle manufacturers to include devices such as exhaust after-treatment system (EATS) and positive crankcase ventilation (PCV) with engine assembly to reduce emissions from the engine to meet the emission standards. For agricultural vehicles such as tractors, in order to meet the emission standards, the manufacturers are required to include the EATS and PCV in the vehicle.
[003] Typically, in tractors the PCV device is connected to a valve housing which is located on the top of the cylinder head for housing the intake valves and exhaust valves. In some types of tractors, the PCV device is arranged outside of the valve housing, while in other types of tractors the PCV device is housed within the valve housing.
[004] In most tractors, the exhaust after-treatment device is provided towards the rear of the vehicle and underneath the chassis or towards the back of the engine compartment. Providing the exhaust after-treatment device towards the rear of the vehicle or back of the engine compartment takes up additional packaging space, making it difficult to achieve a compact design for the tractor. Although some tractors provide components of the EATS such as the DOC and DPF towards the front of the vehicle, wherein the components are connected to the engine exhaust manifold or the engine cylinder head, accommodating the components of EATS with the PCV towards the front of the tractor within the bonnet of the tractor becomes challenging due to the limited packaging space and design constraints.
[005] In other vehicles, the exhaust after-treatment device is mounted onto an exhaust manifold of the engine. However, the exhaust after-treatment device which is mounted on the exhaust manifold is subjected to high noise, vibration and harshness (NVH) characteristics.
[006] Therefore, there exists a need for systems and methods for mounting engine exhaust after-treatment devices, which obviates the aforementioned drawbacks. Further, there exists a need for a method for positive crankcase ventilation for an engine, which obviates the aforementioned drawbacks.

OBJECTS

[007] The principal object of embodiments herein is to provide systems and methods for mounting engine emission control devices.
[008] Another object of embodiments herein is to provide a method for positive crankcase ventilation for an engine.
[009] Another object of embodiments herein is to provide systems for mounting engine emission control devices, which provides better noise, vibration and harshness (NVH) characteristics.
[0010] Another object of embodiments herein is to provide the systems for mounting engine emission control devices in the vehicle, which enables easier assembly and dis-assembly of the engine emission control devices.
[0011] These and other objects of embodiments herein will be better appreciated and understood when considered in conjunction with following description and accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF DRAWINGS
[0012] The embodiments are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0013] Fig. 1 depicts a perspective view of an engine with a system for mounting engine emission control devices on a valve housing of the engine, according to first embodiments as disclosed herein;
[0014] Fig. 2 illustrates an exhaust after-treatment device mounted onto the valve housing of the engine, according to first embodiments as disclosed herein;
[0015] Fig. 3 illustrates a locking member locked onto both ends of a mounting member, according to first embodiments as disclosed herein;
[0016] Fig. 4A illustrates a plurality of first blowby gas gallery and a second blowby gas gallery defined in the valve housing of the engine, according to first embodiments as disclosed herein;
[0017] Fig. 4B depicts a perspective view of the valve housing having a blowby gas outlet defined on the second blowby gas gallery, according to first embodiments as disclosed herein;
[0018] Fig. 5 depicts a perspective view of portion of the engine with a system for mounting engine emission control devices, according to second embodiments as disclosed herein;
[0019] Fig. 6 illustrates the exhaust after-treatment device mounted onto the valve housing and the cylinder head of the engine through main mounting brackets, where a positive crankcase ventilation device is mounted onto a positive crankcase ventilation chamber defined on the valve housing, according to second embodiments as disclosed herein;
[0020] Fig. 7 illustrates a locking member locked onto both ends of a mounting member, according to second embodiments as disclosed herein;
[0021] Fig. 8 illustrates an exhaust after-treatment device mounted onto the valve housing of the engine though main mounting brackets, where a positive crankcase ventilation device is mounted onto a positive crankcase ventilation chamber defined on the valve housing, according to third embodiments as disclosed herein;
[0022] Fig. 9A depicts an exploded view showing main mounting brackets mounted onto the valve housing, wherein the exhaust after-treatment device is locked onto mounting members through locking members, according to third embodiments as disclosed herein;
[0023] Fig. 9B illustrates the after-treatment device mounted onto the valve housing of the engine through main mounting brackets, according to third embodiments as disclosed herein;
[0024] Fig. 10 illustrates a locking member locked onto both ends of a mounting member, according to third embodiments as disclosed herein;
[0025] Fig. 11A and fig. 11B illustrate first blowby gas galleries and second blowby gas gallery defined in the valve housing, according to second and third embodiments as disclosed herein;
[0026] Fig. 12 depicts a flowchart indicating steps of a method for mounting engine emission control devices, according to first embodiments as disclosed herein;
[0027] Fig. 13 depicts a flowchart indicating steps of a method for mounting engine emission control devices, according to second embodiments as disclosed herein;
[0028] Fig. 14 depicts a flowchart indicating steps of a method for positive crankcase ventilation for the engine, according to second and third embodiments as disclosed herein; and
[0029] Fig. 15 depicts a flowchart indicating steps of a method for mounting engine emission control devices, according to third embodiments as disclosed herein.
DETAILED DESCRIPTION
[0030] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0031] The embodiments herein achieve systems and methods for mounting engine exhaust after-treatment device in a vehicle. Further, embodiments herein achieve methods for positive crankcase ventilation for an engine. Referring now to the drawings Figs. 1 through 16, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0032] Fig. 1 depicts a perspective view of an engine (10) with a system (100) for mounting engine emission control devices (20, 30) on a valve housing (10V) of the engine (10), according to first embodiments as disclosed herein. Fig. 2 illustrates an exhaust after-treatment device (20) mounted onto the valve housing (10V) of the engine (10), according to first embodiments as disclosed herein. In the first embodiment, the system (100) for mounting engine emission control devices (20, 30), includes a plurality of mounting members (102), a plurality of locking members (104) and a plurality of support members (106). In another embodiment, the system (100) can include a mounting member (102), a locking member (104) and a support member (106) for a single cylinder engine. For the purpose of this description and ease of understanding, the system (100) is explained herein with below reference to mounting engine emission control devices (20, 30) such as an exhaust after-treatment device (20) and a positive crankcase ventilation device (30) in a passenger vehicle or agricultural vehicle. However, it is also within the scope of the invention to use/practice the components of the system (100) for mounting the engine emission control devices in a pickup truck or heavy-duty vehicle or off-road vehicles or any other vehicles without otherwise deterring the intended function of the system (100) as can be deduced from the description and corresponding drawings.
[0033] Each mounting member (102) is adapted to be mounted onto a valve housing (10V) of the engine (10). For example, each mounting member (102) is removably mounted onto a top portion (10VT) of the valve housing (10V) by using fasteners (not shown). Each mounting member (102) extends along a widthwise direction of the valve housing (10V) and is parallel and spaced away from another mounting member (102). It is also within the scope of the invention to use any other permanent joints or temporary joints for mounting each mounting member (102) onto the valve housing (10V). Each mounting member (102) is at least a mounting channel. Each mounting member (102) includes a base (102B) and a pair of side walls (102S) transversely extending from sides of said base (102B). The base (102B) of each mounting member (102) is secured to the top portion (10VT) of the valve housing (10V).
[0034] Fig. 3 illustrates a locking member (104) locked onto both ends of a mounting member (102), according to first embodiments as disclosed herein. Each locking member (104) is adapted to lock a housing (20H) of the exhaust after-treatment device (20) onto both ends of corresponding the mounting member (102) thereby mounting the exhaust after-treatment device (20) onto the valve housing (10V) through the mounting members (102). The locking member (104) is adapted to be wound around the housing (20H) of the exhaust after-treatment device (20) and each end of each locking member (104) is locked onto corresponding end of corresponding mounting member (102). In the first embodiment, each locking member (104) includes a pair of first guide members (104G), a pair of first bolts (104B) and a pair of first nuts (104N). Each first guide member (104G) is disposed at a corresponding end of the locking member (104) and is positioned in between the side walls (102S) of corresponding mounting member (102). Each first guide member (104G) is adapted to receive corresponding first bolt (104B) therethrough and corresponding first nut (104N) is adjustably connected to corresponding first bolt (104B). Corresponding first nut (104N) is adapted to lock corresponding first bolt (104B) against the side wall (102S) of corresponding mounting member (102) thereby locking corresponding locking member (104) to corresponding mounting member (102).
[0035] In the first embodiment, each locking member (104) includes an adjustable fastener unit (107B, 107N) adapted to tighten or loosen the locking member (104) with respect to the housing (20H) of the exhaust after-treatment device (20). Each locking member (104) includes a first strap section (104F) and a second strap section (104S). One end of the first strap section (104F) of each locking member (104) is secured to the side walls (102S) of corresponding mounting member (102) at corresponding end through corresponding first bolt (104B) and corresponding first nut (104N). Another end of the first trap section (104F) of each locking member (104) is connected to the second strap section (104S) through corresponding adjustable fastener unit (107B, 107N). For the purpose of this description and ease of understanding, each locking member (104) is considered to be at least a strap clamp (bracket strap or mounting strap).
[0036] The adjustable fastener unit (107B, 107N) is connected between the first strap section (104F) and the second strap section (104S) of the locking member (104). In the first embodiment, each adjustable fastener unit (107B, 107N) includes a second bolt (107B), a second guide member (107G) and a second nut (107N). The second bolt (107B) includes a head (107BH) and a threaded body (107BB) extending from the head (107BH). The head (107BH) of each second bolt (107B) is connected to the first strap section (104F) of corresponding locking member (104). The second guide member (107G) of each adjustable fastener unit (107B, 107N) is connected to the second strap section (104S) of corresponding locking member (104) and is adapted to receive the threaded body (107BB) of the second bolt (107B) therethrough. The second nut (107N) is adjustably connected to the threaded body (107BB) of corresponding second bolt (107B). The second nut (107N) of each adjustable fastener unit (107B, 107N) is adapted to lock the second bolt (107B) against the second guide member (107G). The second bolt (107B) is adapted to be adjustably moved with respect to the second nut (107N) thereby tightening or loosening the locking member (104) with respect to the housing (20H) of the exhaust after-treatment device (20) on rotating the second nut (107N).
[0037] The support members (106) are adapted to support the housing (20H) of the exhaust after-treatment device (20) onto the mounting members (102). Each support member (106) is mounted onto corresponding mounting member (102) in between both ends of corresponding locking member (104). Each support member (106) substantially defines an arcuate shape configuration.
[0038] In the first embodiment, the valve housing (10V) includes a plurality of first blowby gas galleries (10X) and a second blowby gas gallery (10Y). The first blowby gas galleries (10X) are adapted to receive blowby gas from a crankcase (10CR) of the engine (10). The second blowby gas gallery (10Y) is adapted to receive the blowby gas from the first blowby gas galleries (10X) and allows the blowby gas flow to the positive crankcase ventilation device (30) through a blowby gas pipe (40). The second blowby gas gallery (10Y) defines a blowby gas inlet (10YA) adapted to facilitate entry of the blowby gas from the first blowby gas galleries (10X) to the second blowby gas gallery (10Y). Further, the second blowby gas gallery (10Y) defines a blowby gas outlet (10YB) adapted to facilitate exit of the blowby gas from the second blowby gas gallery (10Y) to the blowby gas pipe (40). One end of the blowby gas pipe (40) is connected to the blowby gas outlet (10YB) and another end of the blowby gas pipe (40) is connected to the positive crankcase ventilation device (30). The positive crankcase ventilation device (30) is provided at a predetermined distance from said valve housing (10V) and is mounted onto an intake manifold (50).
[0039] Fig. 5 depicts a perspective view of portion of the engine (10) with a system (200) for mounting engine emission control devices (20, 30), according to second embodiments as disclosed herein. Fig. 8 illustrates an exhaust after-treatment device (20) mounted onto the valve housing (10V) of the engine (10) through main mounting brackets (302), where a positive crankcase ventilation device (30) is mounted onto a positive crankcase ventilation chamber (10Z) defined on the valve housing (10V), according to third embodiments as disclosed herein. In the second and third embodiments, the systems (200, 300) for mounting engine emission control devices (20, 30), includes a plurality of main mounting brackets (202, 302), a plurality of mounting members (204, 304), a plurality of locking members (206, 306), a plurality of support members (208, 308) and a plurality of support brackets (210, 310). In another embodiment, the systems (200, 300) can include a main mounting bracket (202, 302), a mounting member (204, 304), a locking member (206, 306), a support member (208, 308) and a support bracket (210, 310) for a single cylinder engine.
[0040] In the second embodiment, each main mounting bracket (202) is mounted onto a cylinder head (10H) and the valve housing (10V) of the engine (10). For example, each main mounting bracket (202) is removably mounted onto the cylinder head (10H) and the valve housing (10V) of the engine (10) by using fasteners (not shown). It is also within the scope of the invention to mount each main mounting bracket (202) onto the cylinder head (10H) and the valve housing (10V) of the engine (10) by using any other temporary joints or permanent joints. Each main mounting bracket (202) is parallel and spaced away from another main mounting bracket (202).
[0041] In the third embodiment, each main mounting bracket (302) is mounted onto the cylinder head (10H) of the engine (10). For example, each main mounting bracket (302) is removably mounted onto the cylinder head (10H) of the engine (10) by using fasteners (not shown). It is also within the scope of the invention to mount each main mounting bracket (302) onto the cylinder head (10H) of the engine (10) by using any other temporary joints or permanent joints. Each main mounting bracket (302) is parallel and spaced away from another main mounting bracket (302).
[0042] In the second and third embodiments, each mounting member (204, 304) is adapted to be mounted onto a horizontal member (202H, 302H) of corresponding main mounting bracket (202, 302). Each mounting member (204, 304) is at least a mounting channel. Each mounting member (204, 304) includes a base (204B, 304B) and a pair of side walls (204S, 304S) transversely extending from sides of the base (204B, 304B). The base (204B, 304B) of each mounting member (204, 304) is mounted onto the horizonal member (202H, 302H) of corresponding main mounting bracket (202, 302).
[0043] In the second embodiment, each locking member (206) is adapted to lock a housing (20H) of the exhaust after-treatment device (20) onto both ends of corresponding mounting member (204) thereby mounting the exhaust after-treatment device (20) onto the cylinder head (10H) and the valve housing (10V) through the main mounting brackets (202).
[0044] In the second and third embodiments, each locking member (206, 306) is adapted to be wound around the housing (20H) of the exhaust after-treatment device (20) and each end of each locking member (206, 306) is locked onto corresponding end of corresponding mounting member (204, 304). In the second and third embodiments, each locking member (206, 306) includes a pair of first guide members (206G, 306G), a pair of first bolts (206B, 306B) and a pair of first nuts (206N, 306N). Each first guide member (206G, 306G) is disposed at a corresponding end of the locking member (206, 306) and is positioned in between the side walls (204S, 304S) of corresponding mounting member (204, 304). Each first guide member (206G, 306G) is adapted to receive corresponding first bolt (206B, 306B) therethrough, and corresponding first nut (206N, 306N) is adjustably connected to corresponding first bolt (206B, 306B). Corresponding first nut (20N, 306N) is adapted to lock corresponding first bolt (206B, 306B) against the side wall (102S) of corresponding mounting member (204, 304) thereby locking corresponding locking member (206, 306) to corresponding mounting member (204, 304).
[0045] In the second and third embodiments, each locking member (206, 306) includes an adjustable fastener unit (207B, 207N, 307B, 307N) adapted to tighten or loosen the locking member (206, 306) with respect to the housing (20H) of the exhaust after-treatment device (20). Each locking member (206, 306) includes a first strap section (206F, 306F) and a second strap section (206S, 306S). One end of the first strap section (206F, 306S) of each locking member (206, 306) is secured to the side walls (204S, 304S) of corresponding mounting member (204, 304) at corresponding end through corresponding first bolt (206B, 306B) and corresponding first nut (206N, 306N). Another end of the first trap section (206F, 306S) of each locking member (206, 306) is connected to the second strap section (206S, 306S) through corresponding adjustable fastener unit (207B, 207N, 307B, 307N). For the purpose of this description and ease of understanding, each locking member (206, 306) is considered to be at least a strap clamp (bracket strap or mounting strap).
[0046] The adjustable fastener unit (207B, 207N, 307B, 307N) is connected between the first strap section (206F, 306F) and the second strap section (206S, 306S) of the locking member (206, 306). In the second and third embodiments, each adjustable fastener unit (107B, 107N) includes a second bolt (207B, 307B), a second guide member (207G, 307G) and a second nut (207N, 307N). The second bolt (207B, 307B) includes a head (207BH, 307BH) and a threaded body (207BB, 307BB) extending from the head (207BH, 307BH). The head (207BH, 307BH) of each second bolt (207B, 307B) is connected to the first strap section (206F, 306F) of corresponding locking member (206, 306). The second guide member (207G, 307G) of each adjustable fastener unit (207B, 207N, 307B, 307N) is connected to the second strap section (206S, 306S) of corresponding locking member (206, 306) and is adapted to receive the threaded body (207BB, 307BB) of the second bolt (207B, 307B) therethrough. The second nut (207N, 307N) is adjustably connected to the threaded body (207BB, 307BB) of corresponding second bolt (207B, 307B). The second nut (207N, 307N) of each adjustable fastener unit (207B, 207N, 307B, 307N) is adapted to lock the second bolt (207B, 307B) against the second guide member (207G, 307G). The second bolt (207B, 307B) is adapted to be adjustably moved with respect to the second nut (207N, 307N) thereby tightening or loosening the locking member (206, 306) with respect to the housing (20H) of the exhaust after-treatment device (20) on rotating the second nut (207N, 307N).
[0047] The support members (208, 308) are adapted to support the housing (20H) of the exhaust after-treatment device (20) onto the mounting members (204, 304). Each support member (208, 308) is mounted onto corresponding mounting member (204, 304) in between both ends of corresponding locking member (206, 306). For example, each support member (208, 308) is welded onto corresponding mounting member (204, 304). Each support member (208, 308) substantially defines an arcuate shape configuration.
[0048] Each support bracket (210, 310) is adapted to connect the housing (20H) of the exhaust after-treatment device (20) onto the valve housing (10V) of the engine (10) by using fasteners (not shown).
[0049] In the second and third embodiments, the valve housing (10V) includes a plurality of first blowby gas galleries (10X) and a second blowby gas gallery (10Y) and a positive crankcase ventilation chamber (10Z). The first blowby gas galleries (10X) are adapted to receive blowby gas from the crankcase (10CR) of the engine (10). The second blowby gas gallery (10Y) is adapted to receive the blowby gas from the first blowby gas galleries (10X) and allows the blowby gas flow to the positive crankcase ventilation device (30) through the positive crankcase ventilation chamber (10Z) defined on the top portion (10VT) of the valve housing (10V). The second blowby gas gallery (10Y) defines a blowby gas inlet (10YA) adapted to facilitate entry of the blowby gas from the first blowby gas galleries (10X) to the second blowby gas gallery (10Y). Further, the second blowby gas gallery (10Y) defines a blowby gas outlet (10YB) adapted to facilitate exit of the blowby gas from the second blowby gas gallery (10Y) to the positive crankcase ventilation chamber (10Z). The positive crankcase ventilation chamber (10Z) is adapted to be coupled with a positive crankcase ventilation device (30) (as shown in fig. 6, fig. 8 and fig. 11B) thereon to facilitate mounting of the positive crankcase ventilation device (30) onto the valve housing (10V). In the second and third embodiments, the positive crankcase ventilation chamber (10Z) defines an oil outlet (10ZA) (as shown in fig. 11A and fig. 11B) adapted to allow filtered oil flow from the positive crankcase ventilation device (30) to the crankcase (10CR) of the engine (10). The exhaust after-treatment device (20) is disposed at a top rear end of cylinder head (10H) and is closer to the positive crankcase ventilation device (30).
[0050] Fig. 12 depicts a flowchart indicating steps of a method (400) for mounting engine emission control devices, according to first embodiments as disclosed herein. At step (402), the method (400) includes mounting a plurality of mounting members (102) onto a valve housing (10V) of an engine (10). At step (404), the method (400) includes engaging a housing (20H) of an after-treatment device (20) with each support member (106) which is mounted onto corresponding the mounting member (102). At step (406), the method (400) includes locking, by a plurality of locking members (104), the housing (20H) of the after-treatment device (20) onto both ends of the mounting members (102) by securing each end of each locking member (104) onto corresponding end of corresponding mounting member (102) thereby mounting the after-treatment device (20) onto the valve housing (10V) through the mounting members (102).
[0051] Fig. 13 depicts a flowchart indicating steps of a method (600) for mounting engine emission control devices (20, 30), according to second embodiments as disclosed herein. At step (602), the method (600) includes mounting a plurality of main mounting brackets (202) onto a valve housing (10V) and a cylinder head (10H) of an engine (10). At step (604), the method (600) includes mounting each mounting member (204) onto corresponding main mounting bracket (202). At step (606), the method (600) includes engaging a housing (20H) of an after-treatment device (20) with each support member (208) which is mounted onto corresponding mounting member (204). At step (608), the method (600) includes locking, by a plurality of locking members (206), the housing (20H) of said after-treatment device (20) onto both ends of mounting members (204) by securing each end of each locking member (206) onto corresponding end of corresponding said mounting member (204) thereby mounting the after-treatment device (20) onto the valve housing (10V) and the cylinder head (10H) through the main mounting brackets (202). At step (610), the method (600) includes mounting, by a positive crankcase ventilation chamber (10Z) defined on said valve housing (10V), a positive crankcase ventilation device (30) thereon.
[0052] Fig. 14 depicts a flowchart indicating steps of a method (700) for positive crankcase ventilation for the engine (10), according to second and third embodiments as disclosed herein. At step (702), the method (700) includes receiving, by a plurality of first blowby gas galleries (10X) defined in a valve housing (10V) of the engine (10), blowby gas from a crankcase (20CR) of the engine (10). At step (704), the method (700) includes receiving, by a second blowby gas gallery (10Y) defined in the valve housing (10V), the blowby gas from the first blowby gas galleries (10X) through a blowby gas inlet (10YA) defined in the second blowby gas gallery (10Y). At step (706), the method (700) includes allowing, by a blowby gas outlet (10YB) defined in the second blowby gas gallery (10Y), the blowby gas from the second blowby gas gallery (10Y) to a positive crankcase ventilation chamber (10Z) defined on the valve housing (10V). At step (706), the method (700) includes allowing blowby gas flow from the positive crankcase ventilation chamber (10Z) of the valve housing (10V) to a positive crankcase ventilation device (30). Further, the method (700) includes, allowing, by an oil outlet (10ZA) defined in the positive crankcase ventilation chamber (10Z), a filtered oil flow from the positive crankcase ventilation device (30) to the crankcase (10CR) of the engine (10).
[0053] Fig. 15 depicts a flowchart indicating steps of a method (600) for mounting engine emission control devices (20, 30), according to third embodiments as disclosed herein. At step (802), the method (800) includes mounting a plurality of main mounting brackets (302) onto a cylinder head (10H) of an engine (10). At step (802), the method (800) includes mounting each mounting member (304) onto corresponding main mounting bracket (302). At step (806), the method (800) includes engaging a housing (20H) of an after-treatment device (20) with each support member (310) which is mounted onto corresponding mounting member (304). At step (808), the method (800) includes locking, by a plurality of locking members (306), said housing (20H) of an after-treatment device (20) onto both ends of the mounting members (304) by securing each end of each of locking member (306) onto corresponding end of corresponding mounting member (304) thereby mounting the after-treatment device (20) onto the cylinder head (10H) through the main mounting brackets (302). At step (808), the method (800) includes mounting, by a positive crankcase ventilation chamber (10Z) defined on the valve housing (10V), a positive crankcase ventilation device (30) thereon. Further, the method (800) includes connecting, by a plurality of support brackets (310), the housing (20H) of the after-treatment device (20) onto the valve housing (10V) of the engine (10).
[0054] The technical advantages of systems (100, 200, 300) for mounting engine emission control devices (20, 30) are as follows. The systems (100, 200, 300) provide better noise, vibration and harshness (NVH) characteristics. The systems (100, 200, 300) enable easier assembly and disassembly of the engine emission control devices (20, 30).
[0055] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modifications within the spirit and scope of the embodiments as described herein.
, C , Claims:We claim,
1. A system (100) for mounting engine emission control devices (20), said system (100) comprising:
at least one mounting member (102) adapted to be mounted onto a valve housing (10V) of an engine (10); and
at least one locking member (104) adapted to lock a housing (20H) of an exhaust after-treatment device (20) onto said mounting member (102) thereby mounting said exhaust after-treatment device (20) onto said valve housing (10V) through said mounting member (102).

2. The system (100) as claimed in claim 1, wherein said locking member (104) is adapted to be wound around said housing (20H) of said exhaust after-treatment device (20) and each end of said locking member (104) is locked onto corresponding end of said mounting member (102); and
said mounting member (102) is mounted onto a top portion (10VT) of said valve housing (10V) along a widthwise direction of said valve housing (10V).

3. The system (100) as claimed in claim 2, wherein said system (100) includes at least one support member (106) adapted to support said housing (20H) of said exhaust after-treatment device (20) onto said mounting member (102), wherein said support member (106) is mounted onto said mounting member (102) in between both ends of said locking member (104);
said support member (106) substantially defines an arcuate shape configuration; and
said mounting member (102) is at least a mounting channel, wherein said mounting member (102) includes a base (102B) and a pair of side walls (102S) transversely extending from sides of said base (102B), wherein said base (102B) is secured to said top portion (10VT) of said valve housing (10V).

4. The system (100) as claimed in claim 3, wherein said locking member (104) includes a pair of first guide members (104G), a pair of first bolts (104B) and a pair of first nuts (104N), wherein each of said first guide member (104G) is disposed at a corresponding end of said locking member (104) and is positioned in between said side walls (102S) of said mounting member (102); and
each of said first guide member (104G) is adapted to receive corresponding said first bolt (104B) therethrough, and corresponding said first nut (104N) is adjustably connected to corresponding said first bolt (104B),
wherein
corresponding said first nut (104N) is adapted to lock corresponding said first bolt (104B) against said side wall (102S) of said mounting member (102) thereby locking said locking member (104) to said mounting member (102);
said locking member (104) includes an adjustable fastener unit (107B, 107N) adapted to tighten or loosen said locking member (104) with respect to said housing (20H) of said exhaust after-treatment device (20);
said adjustable fastener unit (107B, 107N) is connected between a first strap section (104F) and a second strap section (104S) of said locking member (104); and
said locking member (104) is at least a strap clamp (bracket strap or mounting strap).

5. The system (100) as claimed in claim 4, wherein said adjustable fastener unit (107B, 107N) includes,
a second bolt (107B), wherein a head (107BH) of said second bolt (107B) is connected to said first strap section (104F) of said locking member (104);
a second guide member (107G) connected to said second strap section (104S) of said locking member (104) and is adapted to receive a threaded body (107BB) of said second bolt (107B) therethrough; and
a second nut (107N) adjustably connected to said threaded body (107BB) of said second bolt (107B), wherein said second nut (107N) is adapted to lock said second bolt (107B) against said second guide member (107G),
wherein
said second bolt (107B) is adapted to be adjustably moved with respect to said second nut (107N) thereby tightening or loosening said locking member (104) with respect to said housing (20H) of said exhaust after-treatment device (20) on rotating said second nut (107N).

6. The system (100) as claimed in claim 1, wherein said valve housing (10V) includes,
a plurality of first blowby gas galleries (10X) adapted to receive blowby gas from a crankcase (10CR) of said engine (10); and
a second blowby gas gallery (10Y) adapted to receive said blowby gas from said first blowby gas galleries (10X) and allows said blowby gas flow to a positive crankcase ventilation device (30) through a blowby gas pipe (40),
wherein
said second blowby gas gallery (10Y) defines a blowby gas inlet (10YA) adapted to facilitate entry of said blowby gas from said first blowby gas galleries (10X) to said second blowby gas gallery (10Y);
said second blowby gas gallery (10Y) defines a blowby gas outlet (10YB) adapted to facilitate exit of said blowby gas from said second blowby gas gallery (10Y) to said blowby gas pipe (40);
one end of said blowby gas pipe (40) is connected to said blowby gas outlet (10YB) and another end of said blowby gas pipe (40) is connected to said positive crankcase ventilation device (30); and
said positive crankcase ventilation device (30) is provided at a predetermined distance from said valve housing (10V) and is mounted onto an intake manifold (50).

7. A method (400) for mounting engine emission control devices (20), said method (400) comprising:
mounting at least one mounting member (102) onto a valve housing (10V) of an engine (10);
engaging a housing (20H) of an after-treatment device (20) with a support member (106) which is mounted onto said mounting member (102); and
locking, by at least one locking member (104), said housing (20H) of said after-treatment device (20) onto both ends of said mounting member (102) by securing each end of said locking member (104) onto corresponding end of said mounting member (102) thereby mounting said after-treatment device (20) onto said valve housing (10V) through said mounting member (102).

8. A system (200) for mounting engine emission control devices (20, 30), said system (200) comprising:
at least one main mounting bracket (202) adapted to be connected to a valve housing (10V) and a cylinder head (10H) of an engine (10);
at least one mounting member (204) adapted to be mounted onto said main mounting bracket (202); and
at least one locking member (206) adapted to lock a housing (20H) of an exhaust after-treatment device (20) onto both ends of said mounting member (204) thereby mounting said exhaust after-treatment device (20) to said valve housing (10V) and said cylinder head (10H) through said main mounting bracket (202).

9. The system (200) as claimed in claim 8, wherein said valve housing (10V) includes,
a positive crankcase ventilation chamber (10Z) adapted to be coupled with a positive crankcase ventilation device (30) to facilitate mounting of said positive crankcase ventilation device (30) onto said valve housing (10V),
wherein
said positive crankcase ventilation chamber (10Z) is defined on a top portion (10VT) of said valve housing (10V); and
said exhaust after-treatment device (20) is disposed at a top rear end of said cylinder head (10H) and is closer to said positive crankcase ventilation device (30).

10. The system (200) as claimed in claim 9, wherein said valve housing (10V) includes,
a plurality of first blowby gas galleries (10X) adapted to receive blowby gas from a crankcase (10CR) of said engine (10); and
a second blowby gas gallery (10Y) adapted to receive said blowby gas from said first blowby gas galleries (10X) and allows said blowby gas flow to said positive crankcase ventilation device (30) through said positive crankcase ventilation chamber (10Z),
wherein
said second blowby gas gallery (10Y) defines a blowby gas inlet (10YA) adapted to facilitate entry of said blowby gas from said first blowby gas galleries (10X) into said second blowby gas gallery (10Y);
said second blowby gas gallery (10Y) defines a blowby gas outlet (10YB) adapted to facilitate exit of said blowby gas from said second blowby gas gallery (10Y) to said positive crankcase ventilation chamber (10Z); and
said positive crankcase ventilation chamber (10Z) defines an oil outlet (10ZA) adapted to allow filtered oil flow from said positive crankcase ventilation device (30) to said crankcase (10CR) of said engine (10).

11. The system (200) as claimed in claim 8, wherein said system (200) includes at least one support bracket (210) adapted to connect said housing (20H) of said exhaust after-treatment device (20) onto said valve housing (20H) of said engine (10),
wherein
said locking member (206) is adapted to be wound around said housing (20H) of said exhaust after-treatment device (20) and each end of said locking member (206) is locked onto corresponding end of said mounting member (204); and
said mounting member (204) is mounted onto a top portion (10VT) of said valve housing (10V) along a widthwise direction of said valve housing (10V).

12. The system (100) as claimed in claim 8, wherein system (200) includes at least one support member (208) adapted to support said housing (20H) of said exhaust after-treatment device (20) onto said mounting member (204), wherein said support member (208) is mounted onto said mounting member (204) in between both ends of said locking member (206);
said support member (208) substantially defines an arcuate shape configuration; and
said mounting member (204) is at least a mounting channel, wherein said mounting member (204) includes a base (204B) and a pair of side walls (204S) transversely extending from sides of said base (204B), wherein said base (204B) is secured to said top portion (10VT) of said valve housing (10V).

13. The system (200) as claimed in claim 12, wherein said locking member (206) includes a pair of first guide members (206G), a pair of first bolts (206B) and a pair of first nuts (206N), wherein each of said first guide member (206G) is disposed at a corresponding end of said locking member (206) and is positioned in between said side walls (204S) of said mounting member (204); and
each of said first guide member (206G) is adapted to receive corresponding said first bolt (206B) therethrough, and corresponding said first nut (206N) is adjustably connected to corresponding said first bolt (206B),
wherein
corresponding said first nut (206N) is adapted to lock corresponding said first bolt (206B) against said side wall (204S) of said mounting member (204) thereby locking corresponding said locking member (206) to said mounting member (204);
said locking member (206) includes an adjustable fastener unit (207B, 207N) adapted to tighten or loosen said locking member (206) with respect to said housing (20H) of said exhaust after-treatment device (20);
said adjustable fastener unit (207B, 207N) is connected between a first strap section (206F) and a second strap section (206S) of said locking member (206); and
said locking member (206) is at least a strap clamp (bracket strap or mounting strap).
14. The system (200) as claimed in claim 13, wherein said adjustable fastener unit (207B), 207N) includes,
a second bolt (207B), wherein a head (207BH) of said second bolt (207B) is connected to said first strap section (206F) of said locking member (206);
a second guide member (207G) connected to said second strap section (206S) of said locking member (206) and is adapted to receive a threaded body (207BB) of said second bolt (207B) therethrough; and
a second nut (207N) adjustably connected to said threaded body (207BB) of said second bolt (207B), wherein said second nut (207N) is adapted to lock said second bolt (207B) against said second guide member (207G),
wherein
said second bolt (207B) is adapted to be adjustably moved with respect to said second nut (207N) thereby tightening or loosening said locking member (206) with respect to said housing (20H) of said exhaust after-treatment device (20) on rotating said second nut (207N).

15. A method (600) for mounting engine emission control devices (20, 30), said method (600) comprising:
mounting at least one main mounting bracket (202) onto a valve housing (10V) and a cylinder head (10H) of an engine (10);
mounting at least one mounting member (204) onto said main mounting bracket (202);
engaging a housing (20H) of an after-treatment device (20) with a support member (208) which is mounted onto said mounting member (204);
locking, by at least one locking member (206), said housing (20H) of said after-treatment device (20) onto both ends of said mounting member (204) by securing each end of said locking member (206) onto corresponding end of said mounting member (204) thereby mounting said after-treatment device (20) onto said valve housing (10V) and said cylinder head (10H) through said main mounting bracket (202); and
mounting, by a positive crankcase ventilation chamber (10Z) defined on said valve housing (10V), a positive crankcase ventilation device (30) thereon.

16. A method (700) for positive crankcase ventilation for an engine (10), said method (700) comprising:
receiving, by a plurality of first blowby gas galleries (10X) defined in a valve housing (10V) of said engine (10), blowby gas from a crankcase (20CR) of said engine (10);
receiving, by a second blowby gas gallery (10Y) defined in said valve housing (10V), said blowby gas from said first blowby gas galleries (10X) through a blowby gas inlet (10YA) defined in said second blowby gas gallery (10Y);
allowing, by a blowby gas outlet (10YB) defined in said second blowby gas gallery (10Y), said blowby gas from said second blowby gas gallery (10Y) to a positive crankcase ventilation chamber (10Z) defined on said valve housing (10V); and
allowing said blowby gas flow from said positive crankcase ventilation chamber (10Z) of said valve housing (10V) to a positive crankcase ventilation device (30).

17. The method (700) as claimed in claim 16, wherein said method (700) comprises allowing, by an oil outlet (10ZA) defined in said positive crankcase ventilation chamber (10Z), a filtered oil flow from said positive crankcase ventilation device (30) to said crankcase (10CR) of said engine (10).

18. A system (300) for mounting engine emission control devices (20, 30), said system (300) comprising:
at least one main mounting bracket (302) adapted to be connected to a cylinder head (10H) of an engine (10);
at least one mounting member (304) adapted to be mounted onto said main mounting bracket (302);
at least one locking member (306) adapted to lock a housing (20H) of an exhaust after-treatment device (20) onto said mounting member (304) thereby mounting said exhaust after-treatment device (20) to said cylinder head (10H) through said main mounting bracket (302).

19. The system (300) as claimed in claim 18, wherein said valve housing (10V) includes,
a positive crankcase ventilation chamber (10Z) adapted to be coupled with a positive crankcase ventilation device (30) to facilitate mounting of said positive crankcase ventilation device (30) onto said valve housing (10V),
wherein
said positive crankcase ventilation chamber (10Z) is defined on a top portion (10VT) of said valve housing (10V); and
said exhaust after-treatment device (20) is disposed at a top rear end of said cylinder head (10H) and is closer to said positive crankcase ventilation device (30).

20. The system (300) as claimed in claim 19, wherein said valve housing (10V) includes,
a plurality of first blowby gas galleries (10X) adapted to receive blowby gas from a crankcase (10CR) of said engine (10); and
a second blowby gas gallery (10Y) adapted to receive said blowby gas from said first blowby gas galleries (10X) and allows said blowby gas flow to said positive crankcase ventilation device (30) through said positive crankcase ventilation chamber (10Z),
wherein
said second blowby gas gallery (10Y) defines a blowby gas inlet (10YA) adapted to facilitate entry of said blowby gas from said first blowby gas galleries (10X) into said second blowby gas gallery (10Y);
said second blowby gas gallery (10Y) defines a blowby gas outlet (10YB) adapted to facilitate exit of said blowby gas from said second blowby gas gallery (10Y) to said positive crankcase ventilation chamber (10Z); and
said positive crankcase ventilation chamber (10Z) defines an oil outlet (10ZA) adapted to allow filtered oil flow from said positive crankcase ventilation device (30) to said crankcase (10CR) of said engine (10).

21. The system (300) as claimed in claim 18, wherein said system (300) includes,
at least one support bracket (310) adapted to connect said housing (20H) of said exhaust after-treatment device (20) onto said valve housing (20H),
wherein
said locking member (206) is adapted to be wound around said housing (20H) of said exhaust after-treatment device (20) and each end of said locking member (206) is locked onto corresponding end of said mounting member (204); and
said mounting member (204) is mounted onto a top portion (10VT) of said valve housing (10V) along a widthwise direction of said valve housing (10V).

22. The system (300) as claimed in claim 21, wherein said system (200) includes at least one support member (310) adapted to support said housing (20H) of said exhaust after-treatment device (20) onto said mounting member (304), wherein said support member (310) is mounted onto said mounting member (304) in between both ends of said locking member (306);
said support member (310) substantially defines an arcuate shape configuration; and
said mounting member (304) is at least a mounting channel, wherein said mounting member (304) includes a base (304B) and a pair of side walls (304S) transversely extending from sides of said base (304B), wherein said base (304B) is secured to said top portion (10VT) of said valve housing (10V).

23. The system (300) as claimed in claim 22, wherein said locking member (306) includes a pair of first guide members (306G), a pair of first bolts (306B) and a pair of first nuts (306N), wherein each of said first guide member (306G) is disposed at a corresponding end of said locking member (306) and is positioned in between said side walls (304S) of c said mounting member (304); and
said first guide member (306G) is adapted to receive corresponding said first bolt (306B) therethrough, and corresponding said first nut (306N) is adjustably connected to corresponding said first bolt (306B),
wherein
corresponding said first nut (306N) is adapted to lock corresponding said first bolt (306B) against said side wall (304S) of said mounting member (304) thereby locking said locking member (306) to said mounting member (304);
said locking member (306) includes an adjustable fastener unit (307B, 307N) adapted to tighten or loosen said locking member (306) with respect to said housing (20H) of said exhaust after-treatment device (20);
said adjustable fastener unit (307B, 307N) is connected between a first strap section (306F) and a second strap section (306S) of said locking member (306); and
said locking member (306) is at least a strap clamp (bracket strap or mounting strap).

24. The system (300) as claimed in claim 23, wherein said adjustable fastener unit (307B), 307N) includes,
a second bolt (307B), wherein a head (307BH) of said second bolt (307B) is connected to said first strap section (306F) of said locking member (306);
a second guide member (307G) is connected to said second strap section (306S) of said locking member (306) and is adapted to receive a threaded body (307BB) of said second bolt (307B) therethrough; and
a second nut (307N) adjustably connected to said threaded body (307BB) of said second bolt (307B), wherein said second nut (307N) is adapted to lock said second bolt (307B) against said second guide member (307G),
wherein
said second bolt (307B) is adapted to be adjustably moved with respect to said second nut (307N) thereby tightening or loosening said locking member (306) with respect to said housing (20H) of said exhaust after-treatment device (20) on rotating said second nut (307N).

25. A method (800) for mounting engine emission control devices (20, 30), said method (800) comprising:
mounting at least one main mounting bracket (302) onto a cylinder head (10H) of an engine (10);
mounting said mounting member (304) onto said main mounting bracket (302);
engaging a housing (20H) of an after-treatment device (20) with support member (310) which is mounted onto corresponding said mounting member (304);
locking, by at least one locking member (306), said housing (20H) of an after-treatment device (20) onto both ends of said mounting members (304) by securing each end of said locking member (306) onto corresponding end of said mounting member (304) thereby mounting said after-treatment device (20) onto said cylinder head (10H) through said main mounting bracket (302); and
mounting, by a positive crankcase ventilation chamber (10Z) defined on said valve housing (10V), a positive crankcase ventilation device (30) thereon.

26. The method (800) as claimed in claim 25, wherein said method (800) includes connecting, by at least one support bracket (310), said housing (20H) of said after-treatment device (20) onto said valve housing (10V) of said engine (10),
wherein
said after-treatment device (20) is disposed at a top rear end of said cylinder head (10H) and in the vicinity to said positive crankcase ventilation device (30).